Matchbox
This is a web-based installation of Matchbox.
Instructions:
Select an example configuration from the dropdown box, click "Run"
to run either of the programs individually, or "Find Race Conditions"
to compute all interleavings of the two programs and look for race
conditions between them.
This JavaScript implementation of Matchbox uses the Web Workers
facility of your browser to run the evaluation process. So, if your
browser does not support Web Workers, it may not function correctly.